Rotation speed control apparatus of open close body for...

Details Rotation speed control apparatus of open close body for... Rotation speed control apparatus of open close body for...

2005-06-21

2005-06-21

Ro, Bentsu (Department: 2837)

Electricity: motive power systems

Motor load, armature current or force control during...

C318S272000, C318S286000, C318S468000

Reexamination Certificate

active

06909253

ABSTRACT:
A controller PWM control an opening and closing motor (16) of an opening and closing means, increases a duty ratio of the PWM control according to a given increasing rate just after starting the opening and closing motor (16), reducing the duty ratio to a given value by detecting a start of the open close body, and keeping the given value of the duty ratio for a given period.

REFERENCES:
patent: 5747956 (1998-05-01), Lamm
patent: 5770934 (1998-06-01), Theile
patent: 5892340 (1999-04-01), Sasajima et al.
patent: 6034494 (2000-03-01), Kitamine et al.
patent: 6064165 (2000-05-01), Boisvert et al.
patent: 6405485 (2002-06-01), Itami et al.
patent: 11-236783 (1999-08-01), None

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